Method of manufacturing a display device with reduced thermal stress

Abstract

A method in which a (display) device having a part (41) comprising a first wall (43) and a second wall (44) is manufactured, which part (41) is warmed up during the temperature treatment by unilateral irradiation with heat by means of heat radiators (35). The method is characterized in that the temperature treatment further comprises measures which cause a fluid (53) to be fed past the outer surface of the first wall (43) to remove heat from said outer surface and/or measures which cause a fluid to be fed past the inner surface of the second wall (44) to supply heat to said second surface. In an embodiment, the inner surface of the second wall (44) is provided with a heat-absorbing coating (48). Preferably, the heat radiators (35) emit electromagnetic radiation having a wavelength below 3 μm.

We claim: 
     
       1. A method of manufacturing a device having a part (1) which comprises a wall (2) having a first surface (3) and an oppositely located second surface (4), said part (1) being subjected to a temperature treatment in which said part (1) is heated by irradiation with heat via the first surface (3) by means of heat radiators (5), the temperature treatment comprising further measures which, during heating of the part (1), cause the temperature of the second surface (4) to be increased, characterized in that, the second surface (4) is provided with a radiation absorbing coating (16) comprising a substance selected from the group consisting of iron oxide and a silicate. 
     
     
       2. A method as claimed in claim 1, characterized in that, in operation, the heat radiators emit predominantly electromagnetic radiation having a wavelength below 3 μm. 
     
     
       3. A method as claimed in claim 2, wherein in operation, the heat radiators emit predominantly electromagnetic radiation having a wavelength between about 0.3 and 2.7 μm. 
     
     
       4. A method as claimed in claim 1, wherein the device is a display device. 
     
     
       5. A method as claimed in claim 1, characterized in that, a fluid (8) is fed past the first surface (3), during heating of the part (1), to remove heat from the first surface (3). 
     
     
       6. A method as claimed in claim 5, characterized in that, the fluid (8) comprise a gas selected from the group consisting of nitrogen, oxygen and helium. 
     
     
       7. A method as claimed in claim 5, characterized in that, the fluid (8) comprises water.